I say if you really want to move around, you will probably need a digger; so its not much of a problem for me. As for the price, i think its not overpriced as it is considered a luxury item which new players would probably not be buying.
And i don't see how this is p2w as it definitely does not give a player significant advantage, unless you're a player who only finds pvp matches at places such as whirpool island or somewhere deep inside a random cave, so you don't have your HM slave :Grin: